● 31mm maximum diameter
● 21.5mm height
● Cone-shaped instrument designed to reflect the microscope light in concentric rings on the cornea to detect astigmatism
● 1mm lance diamond blade
● 0.2mm front flat tip
● Micrometer handle, overall length 105mm in retracted position
● One division on the scale is 10 microns
● One revolution of the barrel is 500 microns
● Scaled 0-1mm (0-1000 microns)